Chonlatarn started well in fairness to him and he made it clear that he came to fight as he came forward and tried to put Berchelt under pressure from the opening seconds. That pressure had some success late in the round, as he seemed to tag Berchelt clean, but was caught as the men exchanged punches just before the bell and seemed to struggle with the speed and movement of Berchelt which was allowing Berchelt to tag the Thai as he came in. The following round again saw Chonlatarn applying the pressure and like in the first round he struggled to corner the fleet footed Mexican who ended the round with several solid shots on the Thai.
The Thai tried to apply the pressure again in round 3 but by now the Mexican was totally at ease and and picked his spots to force Chonlatarn backwards with raids on the front foot as well as the smart boxing on the move. With about a minute of the round left Berchelt rocked Chonlatarn and a follow up saw the Thai being forced to take some incredibly hurtful shots as it looked like he as ready to go. To his credit Chonlatarn saw out the round but was left looking like a who was close to being finished.
That finish ultimately came in round 4 with Berchelt biding his time early in the round before exploding with spiteful shots, backing up Chonlatarn and then breaking Chonlatarn with power shots to head and body before a sweeping left hook dropped the Thai hard. Chonlatarn beat the count but was dropped again seconds later from a flurry punctuated with a nasty body shot, this time he stayed down, with an official time of 2:59 seconds of the round gone, though it did seem like a long round.
For the Thai the loss likely finishes his hopes of ever becoming a world champion whilst it sets up a potentially great fight between Berchelt and Vasyl Lomachenko, in what could potentially be a really good test for the highly skilled Ukrainian star.